The DF-745SG Nano Trace moisture analyser is a Tuneable Laser Diode sensor based analyser with application software specifically designed for blending specialty gases involving single gases and gas mixtures drawn from a database of 12 standard background gases with blends of up to 8 different gases. DF-745SG Highly stable tuneable laser diode sensor Simple operator interface Fast response and stabilization between gases and gas blends Suitable for pure and speciality gas blends Specialty gas cylinder quality control Bulk gas cylinder quality control FEATURES APPLICATIONS PROCESS ANALYSERS
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DF-745SG · Package also includes Bypass Rotameter and Inlet Pressure Regulator (rated up to 150psig), and a back flow prevention valve. DF-745SG’s with this option require 60-100psig
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The DF-745SG Nano Trace moisture analyser is a Tuneable Laser Diode sensor based analyserwith application software specifically designed for blending specialty gases involving singlegases and gas mixtures drawn from a database of 12 standard background gases with blendsof up to 8 different gases.
DF-745SG
Highly stable tuneable laser diode sensor
Simple operator interface
Fast response and stabilization between gases and gas blends
Suitable for pure and speciality gas blends
Specialty gas cylinder quality controlBulk gas cylinder quality control
FEATURES APPLICATIONS
PROCESS ANALYSERS
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DF-745SG
KEY FEATURES
Application Specific Software InterfaceSoftware allows operators to select blend or pure gas in which moisture will be measured as well asarchive time, date, make-up of blend and moisture content.
Recipe Storage and RecallAnalyser stores and recalls specific blends which are measured on a regular basis and reduces set-up timebetween cylinders.
Multiple Background MeasurementsCompatible for use with pure or blended N2, Ar, CO2, Ne, N2O, O2, He, SF6, Kr, H2, CO, Xe gases.
The DF-745SG is in compliance with:
Low Voltage Directive (2002/73/23EEC).
EMC Directive (2001/89/336/EEC).
EC DIRECTIVE COMPLIANCE
ELECTRICAL SAFETY
Electrical safety to IEC 61010-1: Ed 2. The product is rated for “Installation Category II” in accordance with IEC 60664-1. The product is rated for “Pollution Degree 2” in accordance with IEC 60664-1.
DESCRIPTION Options
Power lead: There are 2 options for the Power lead:100-220V ac220-240V ac
Outputs: Analyser supplied with a non-isolated 4-20mA & 0-1, 0-2, 0-5, or 0-10V dc as standard
Mounting: The DF-745SG comes standard with a NEMA 1, 19” rack mount
User manual:
American
Analogue and voltage output
Rack mount
English
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DF-745SG
SPECIFICATIONS Gas Type: H2O
TECHNOLOGY Tuneable Laser Diode
PERFORMANCE
Operating ranges: 0-100ppm
Smallest recommendedoutput range:
0-1ppm
Intrinsic error (accuracy): 0-20ppm range +/-5% of reading or +/-25ppb (whichever is greater) 21-100ppm range +/-10% of reading or+/-100ppb (whichever is greater)
Response time (T90) at sample flow rate:
<3 minutes at 1 litre/min
Zero drift/month: Negligible
Span drift/month: Negligible
Lower detection Limit (LDL): 100ppb
Upset recovery time: <5 minutes to return to within 1ppm of previous stable reading OUTPUTS/INPUTS
Output: Isolated 4-20mA dc, and choice of 0-1, 0-2, 0-5, or 0-10V dc
Output range: Scaleable to any range between 0-1ppm to 0-100ppm
Dual scale range: Two user selectable secondary analogue output ranges for rescaling the output once the primary range isexceeded
Relay contacts: Up to 4 non-latching, independently assignable to alarms or indicators. SPDT contacts rated for 1amp at 30V dc.
Serial communications: Factory configured RS232 or RS 485 two-way serial communications
Gas scale factor: Background gas compensation for gases other than N2
Mounting: 19” rack mount NEMA 1 enclosure
OPTIONS
Hydrogen safety system purge: Optional safety system for use with hydrogen includes Sample Delivery Interlock and Case Purge Valves forinstrument housing, and enclosure and purge protection system for optional external vacuum pump. HydrogenSafety System can be ordered with or without the enclosure and purge protection system for the optional vacuumpump (NOTE: Hydrogen Safety system limits available relays from 4 to 3)
Isolation package: Includes upstream and downstream internally air actuated electropolished isolation valves to isolate cell duringtransport and upon loss of power. Package also includes Bypass Rotameter and Inlet Pressure Regulator (ratedup to 150psig), and a back flow prevention valve. DF-745SG’s with this option require 60-100psig connectionto 1/8” compression inlet fitting for valve actuation
Custom gas calibration: DF-745SG is configured with 12 standard gases and up to 10 additional gases can be added as an option
For new installations and replacement of olderServomex and competitor products, we will workwith you to develop a bespoke service and supportpackage, ensuring full measurement availability andplant operation within your timescales and budget.
UTILITIES REQUIRED
Power: 110V ac or 230V ac 50/60 Hz
Pneumatic pressure for isolation package option: 60 to 100psig (5.1 to 7.9 BarA)
TECHNICAL CENTRES
SYSTEMS ENGINEERING CENTRES
BUSINESS CENTRESServomex Group LimitedCrowboroughEast Sussex, TN6 3FBUKTel: +44 (0)1892 652181 Fax: +44 (0)1892 662253
Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.